[ HAND-OPERATED TOOLS, namely, - GRINDSTONES, OILSTONES, HONES, WHETSTONES, AND TOOL SHARPENERS ]

Safety-Tread Tiles and Terrazzo of Bonded Abrasive Grains

Abrasive Products-Namely, Powders, Grains, Pastes, Stones, Hones, Whetstones, Oilstones, Bricks, Valve-Grinding Compounds: Rubbing-Up, Turning, Truing and Dressing Stones, and Grinding, Cutting, Polishing, and Abrading Wheels

Heat-Refractory Materials, Consisting of Alumina, Silicon Carbide, or Mixtures of Either of These Materials with a Ceramic Bonding Material

Refractory Bricks or Blocks.

Heat-Refractory Plates, Tubes, Muffles, Crucibles and Dishes, ADAPTED FOR USE INLABORATORIES

ABRASIVE MATERIALS, POLISHING COMPOUNDS, ABRASIVE COMPOUNDS, POLISHING MATERIALS, ABRASIVE TOOLS, ABRASIVE IMPLEMENTS, POLISHING TOOLS, POLISHING IMPLEMENTS, ABRASIVE GRAINS, ABRASIVE POWDERS, GRINDING WHELLS, GRINDSTONES, HONES, WHETSTONES, TOOL-SHARPERNERS, ABRASIVE CLOTH, ABRASIVE PAPER, ARTICLES MADE OF ABRASIVE MATERIAL, AND ARTICLES CONTAINING ABRASIVE MATERIAL